generally my recommendation would be to go to a very simple gravity load, see if you can get the problem to solve, that will ensure you have your contacts and restraints defined properly. if you don't get past that you need to work on restraints and contact.

if that is successful, reduce the magnitude of your load, see if it solves. if it does, your load is too high or you'll need to work through some solving difficulties

feel free to post your model using the pack and go function from solidworks and the advanced editor at the top right